Elbow sleeve



FIG. 1 is a front perspective view of an elbow sleeve showing our new design;

FIG. 2 is a front side elevation view thereof;

FIG. 3 is a back side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top side plan view thereof;

FIG. 7 is a bottom side plan view thereof; and,

FIG. 8 is a perspective view showing the elbow sleeve in use.

The broken lines depict portions of the elbow sleeve that form no part of the claimed design. The broken lines showing an arm in FIG. 8 show unclaimed environment and form no part of the claimed design. 

CLAIM The ornamental design for an elbow sleeve, as shown and described. 